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Following diagram represents ______________(a) drag polar(b) weight polar(c) thrust polar(d) lift curve slopeThis question was addressed to me in a national level competition.Question is taken from Flight Mechanics in chapter Performance and Flight Mechanics of Aircraft Design

Answer» RIGHT option is (a) drag polar

Easy explanation: Above diagram represents the typical drag polar. A drag polar is simple graphical representation of variation of drag coefficient with respect to LIFT coefficient or AOA. Drag polar can be USED to ESTIMATE drag characteristics. Lift curve slope is change in lift with respect to change in AOA.


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